Protege 2.1 Beta update (build 232)

There's a new beta build available on our Web site:

http://protege.stanford.edu/download/prerelease/basic/
http://protege.stanford.edu/download/prerelease/full/

** PLEASE NOTE: Developers of bundled plugins should check this build to 
make sure your contributions work as we plan to release 2.1 on Friday, June 
11th.

Changes
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1. Fixed a "slot at class" update problem in InstanceDisplay.

2. Protege is much more friendly towards art than in it was in the last few 
builds.  :)